Car-ventilator



(No Model.)

F. S. TULL.

I GAR VENTILATOR. No. 371,287. Patented Oct. 11, 1887.

WI TNESSES- v IJVVEJV TOR .ZZZwdn ZZaw .dttor y N. PETER Pm I UNITEDSTATES PATENT OFFICE.

FRANCIS SHALIS TULL, OF GALVESTON, TEXAS.

CAR-VENTI LATO R.

SPECIFICATION forming part of Letters Patent No. 371,287, dated October11, 1887.

Application filed March 7, 1887. Serial No. 230,016. (No model.)

To all whom it may concern.-

Be it known that I, FRANCIS SHALIS TULL, of Galveston, in the county ofGalveston and State of Texas, have invented certain new and usefulImprovements in Car-Ventilators; and Ido hereby declare the following tobea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and usethe same.

My invention relates to car-ventilators; and the object of the inventionis to provide for the thorough exhaustion of the foul air within thecar.

Oars as heretofore constructed have been provided with hinged or pivotedpanels adapted to be opened when ventilation was desired; but owing tothe speed of the train fresh air was forced into the car and the foulair forced down into and circulated through it, and the eduction of foulair in any great quantity prevented.

The invention consists in the featn res of construction and combinationsof parts hereinafter described, and pointed out in the claim.

In the drawings, Figure 1 is a longitudinal vertical section of aportion of car with my improved ventilator applied thereto. Fig. 2 is abottom view of the ventilator.

A represents the car, and B a pipe located on the roof, and preferablyto one side of the center thereof, said pipe extending the entire lengthof the car and communicating with the interior thereof at suitableintervals by means of branch pipes a, which extend into openings 1) inthe roof of the car, said openings being preferably covered at theirinner ends by gratings c or their equivalents. At each end of the pipeBis provided a casing, C, substantially circular in form, and eachhaving within it a rotary exhaust-fan, D.

E represents the valves or dampers of the device, located within thepipe B at each end thereof, between the casings O and the pipes at, saidvalves being designed to cut off co1nmunication between the casings andsaid pipes a. The valves or dampers are each mounted on a suitableshaft, 0, the ends of said shaft extending through and beyond the pipeA. Upon the ends of each of these shafts is mounted a bail, d, providedwith a wing or vane, whereby the valves may be opened or closed by theforce of the air, the open and closed positions of the valve being shownby full and dotted lines, respectively.

It will be seen that when the valves occupy lines, communicationbetweenthe interior of the ear and the casings is closed.

The fans D are mounted upon suitableshafts, F, having bearingin thesides of the casing G, and extend beyond the same at one end and intocasings G, located on a line with casings G, to one side thereof. Theshafts F also have bearing in the sides of the casings G and carryforce-fans H. Each of the casings G is provided with a flaring orfunnelshaped mouth, I, which extend from the casings in oppositedirections, so that the air will be forced into one or the other of thecasings G without regard to the direction of travel of the train.

Extending inwardly toward each other from the casings G are escape-pipesJ.

The operation of my invention is as follows: When the train is inmotion, the air is forced into one or the other of the casings G androtates the fan therein, the air passing out through the escape-pipe ofsaid casing. The revolution of the fan within the casing rotates theshaft F and the fan D thereon, so that a suction is created within thepipe B, and the foul air withdrawn from the car and discharged throughone or more outlet-openings or pipes, f, in the fan-casing C. When thecar has been sufficiently ventilated, the exhaustion of air therefrommay be stopped by closing the valve.

If desired, a pipe, B, can be placed on each side of the center of theroof of the car, or only one maybe employed,as before described.

It will be apparent that the valve at the front end of the pipe (withreference to the direction of travel) will be opened by the force of theair against the wing or vane, and that the valve at the opposite endwill be closed by the same force, so that the exhaust-pipe will bealways closed at one end.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The combination, with a car, of an eductionpipe arranged lengthwise ofthe car, a casing,

In testimony whereofI havesigued this specification in the presence oftwo subscribing witnesses.

FRANCIS SHALIS TULL.

Witnesses:

JAS. W. HALE, RICHARD B. S. GRIM.

